21.

Which of the metabolites is common to respiration mediated breakdown of fats, carbohydrates and proteins?

• Glucose-6-phosphate

• Fructose 1, 6-bisphosphate

• Pyruvic acid

• Acetyl Co-A

Meiosis takes place in

• Meiocyte

• Conidia

• Gemmule

• Megaspore

Which of the following is not correctly matched for the organism and its cell wall degrading enzyme?

• Bacteria - Lysozyme

• Plant cells - Cellulase

• Algae - Methylase

• Fungi - Chitinase

Which of the following are likely to be present in deep sea water?

• Archaebacteria

• Eubacteria

• Blue-green algae

• Saprophytic fungi

Natural reservoir of phosphorus is

• sea water

• animal bones

• rock

• fossils

Which of the following are correctly matched with respect to their taxonomic classification?

• Flying fish, cuttlefish, silverfish - Pisces

• Centipede, millipede, spider, scorpion - Insecta

• House fly, butterfly, tse-tse fly, silverfish - Insecta

• Spiny anteater, sea urchin, sea cucumber - Echinodermata

Which group of animals belong to the same phylum?

• Malarial parasite, Amoeba, mosquito

• Earthworm, pinworm, tapeworm

• Prawn, scorpion, Locusta

• Sponge, sea anemone, starfish

One of the representative of Phylum - Arthropoda is

• cuttlefish

• silverfish

• pufferfish

• flying fish

The H-zone in the skeletal muscle fibre is due to

• the absence of myofibrils in the central portion of A-band

• the central gap between myosin filaments in the A-band

• the central gap between actin filaments extending through myosin filaments in the A-band

• extension of myosin filaments in the central portion of the A-band

What external changes are visible after the last moult of a cockroach nymph?

• Mandibles become harder

• Anal cerci develop

• Both fore wings and hind wings develop

• Labium develops